The Year Noah Syndergaard Learned to Pitch

Mets Super Prospect Has Struggled This Year in Las Vegas

SALT LAKE CITY—Noah Syndergaard doesn't deserve to pitch for the Mets. Not yet, anyway. He understands that now. A 5.74 ERA in Triple-A would humble anyone.

It took a little time and a lot of growing up for Syndergaard to arrive at that conclusion. He reported to his first major-league training camp in February brimming with confidence, hoping that his final journey to New York involved little more than a pit stop in Las Vegas. After...